build(deps): Bump codecov/codecov-action from v1.2.0 to v1.2.1

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from v1.2.0 to v1.2.1.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/master/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-action/compare/v1.2.0...e156083f13aff6830c92fc5faa23505779fbf649)

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/coverage.yml

@@ -121,7 +121,7 @@ jobs:
       - run: |
           cat ./*profile.out | grep -v "mode: atomic" >> coverage.txt
         if: env.GIT_DIFF
-      - uses: codecov/codecov-action@v1.2.0
+      - uses: codecov/codecov-action@v1.2.1
         with:
           file: ./coverage.txt
         if: env.GIT_DIFF